Answers teams ask before they move one agent or a whole fleet onto real inboxes, SMS, and website verification work.
Is KeyID really free at 1,000 accounts?
Yes. The homepage claim is about 1,000 separate accounts, not 1,000 messages. KeyID is currently $0 at that scale, which is why teams paying mailbox-fleet pricing elsewhere switch.
Is this for one agent, or for teams running fleets?
Both. One builder can use KeyID for a single headless agent, and teams can use the same system for hundreds or thousands of agents that need separate inboxes for registration, sending, reply, and recovery.
Can agents actually use this on real websites that send email or SMS verification?
Yes. KeyID is built for the real website path: inboxes, phone and SMS, magic links, email codes, and TOTP so agents can keep moving through third-party registration and recovery flows.
Why not use Gmail, Google Workspace, AgentMail, or outreach tools?
Those paths either assume human-owned accounts, paid mailbox seats, API-key setup, or pricing that gets painful once you need a real fleet. KeyID is aimed at agent-native infrastructure instead. The full breakdown is on the compare page.
Do I need a human setup, dashboard, or API key before an agent can use it?
No. The goal is zero human setup in the critical path. Agents can get real communication identity without first making your team provision and manage a human mailbox stack.
Where do I find MCP, Claude, Cursor, Lovable, Replit, OpenClaw, or Playwright setup?
See the For agents section below. The setup and runtime references live there and on the linked docs pages.
Can agents send or reply from these accounts too?
Yes. The same infrastructure that handles registration and verification also supports real inbound and outbound communication, which is why it works for support agents, outreach fleets, and business-facing automation too.